Author Topic: NECO 2022 PHYSICS ANSWERS(PRACTICAL) (Read 412 times)

MANDINHO · « **on:** July 17, 2022, 07:52:25 pm »

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MANDINHO · « **Reply #1 on:** July 18, 2022, 12:03:50 pm »

PHYSICS PRACTICAL ANSWERS

(2)
L = 10.00cm

[TABULATE]

S/N: 1 || 2 || 3 || 4 || 5

β°: 70.00 || 60.00 || 50.00 || 40.00 || 50.00 || 60.00

α°: 20.00 || 30.00 || 40.00 || 50.00 || 60.00

Sinα=Q : 0.34 || 0.50 || 0.64 || 0.77 || 0.87

Z/cm: 1.70 || 2.50 || 3.20 || 3.80 || 4.30

(2xv)
GRAPH

(2xvi)
Slope (S) = ΔZ/ΔQ
S = 2.95/0.6
S = 4.92cm

(2xvii)
K = 2S
K = 2 x 4.92
K = 9.84cm

(2xviii)
(i) I ensured the pins were vertically upright
(ii) I avoided parallax error in reading the protractor

(2bi)
[TABULATE]

=PLANE SURFACE=
(i) Image distance is samw with the object distance
(ii) Magnification is always equal to one

=CURVED SURFACE=
(i) Image and object distance varies
(ii) Magnification varies

(2bii)
Number of images = (360/θ) - 1
= (360/40) - 1
= 8 images
==============================

(3vi)
[TABULATE]

R(Ω): 1.0 || 2.0 || 3.0 || 4.0 || 5.0

l (cm): 60.00 || 50.0 || 45.0 || 42.9 || 41.2

(100 - l)cm: 40.0 || 50.0 || 54.5 || 57.1 || 58.8

Z=(100 - l)/l : 0.6667 || 1.0000 || 1.2000 || 1.3310 || 1.4272

R-¹(Ω-¹): 1.0000 || 0.5000 || 0.3333 || 0.2500 || 0.2000

(3vi)
GRAPH

(3viii)
Slope, S = ΔZ/ΔR-¹
S = (0.84 - 1.28)/(0.6 - 0.29)
S = -0.44/0.31
S = -1.419
Intercept, c = 1.68

(3ix)
K = c-¹ = (1.68)-¹
K = 0.595

(3x)
(i) I avoided parallex error when reading the potentiometer
(ii) I ensured tight connections

(3bi)
A possible reason is wrong circuit connection
Solution: Check connections and ensure they are all tight.

(3bii)
I - Voltage
II - Current.

Earlyface

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Author Topic: NECO 2022 PHYSICS ANSWERS(PRACTICAL) (Read 412 times)

MANDINHO

NECO 2022 PHYSICS ANSWERS(PRACTICAL)

MANDINHO

Re: NECO 2022 PHYSICS ANSWERS(PRACTICAL)

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